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https://github.com/mfontanini/libtins
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Added ICMP class. It was tested and it's working.
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Matias
169
include/icmp.h
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169
include/icmp.h
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#ifndef __ICMP_H
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#define __ICMP_H
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#include "pdu.h"
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namespace Tins {
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/** \brief ICMP represents the ICMP PDU.
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*
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* ICMP is the representation of the ICMP PDU. Instances of this class
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* must be sent over a level 3 PDU, this will otherwise fail.
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*/
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class ICMP : public PDU {
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public:
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/** \brief ICMP flags
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*/
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enum Flags {
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ECHO_REPLY = 0,
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DEST_UNREACHABLE = 3,
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SOURCE_QUENCH = 4,
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REDIRECT = 5,
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ECHO_REQUEST = 8,
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TIME_EXCEEDED = 11,
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PARAM_PROBLEM = 12,
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INFO_REQUEST = 15,
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INFO_REPLY = 16
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};
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/** \brief Creates an instance of ICMP.
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*
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* If no flag is specified, then ECHO_REPLY will be used.
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* \param flag The type flag which will be set.
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*/
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ICMP(Flags flag = ECHO_REPLY);
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/** \brief Sets the code field.
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*
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* \param new_code The code which will be stored in the ICMP struct.
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*/
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void code(uint8_t new_code);
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/** \brief Sets the type field.
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*
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* \param new_code The type which will be stored in the ICMP struct.
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*/
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void type(uint8_t type);
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/** \brief Sets echo request flag for this PDU.
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*
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* \param id The identifier for this request.
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* \param seq The sequence number for this request.
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*/
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void set_echo_request(uint16_t id, uint16_t seq);
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/** \brief Sets echo request flag for this PDU.
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*
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* This uses a global id and sequence number to fill the request's
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* fields.
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*/
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void set_echo_request();
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/** \brief Sets echo reply flag for this PDU.
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*
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* \param id The identifier for this request.
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* \param seq The sequence number for this request.
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*/
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void set_echo_reply(uint16_t id, uint16_t seq);
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/** \brief Sets echo reply flag for this PDU.
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*
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* This uses a global id and sequence number to fill the request's
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* fields.
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*/
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void set_echo_reply();
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/** \brief Sets information request flag for this PDU.
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*
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* \param id The identifier for this request.
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* \param seq The sequence number for this request.
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*/
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void set_info_request(uint16_t id, uint16_t seq);
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/** \brief Sets information reply flag for this PDU.
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*
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* \param id The identifier for this request.
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* \param seq The sequence number for this request.
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*/
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void set_info_reply(uint16_t id, uint16_t seq);
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/** \brief Sets destination unreachable for this PDU.
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*/
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void set_dest_unreachable();
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/** \brief Sets time exceeded flag for this PDU.
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*
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* \param ttl_exceeded If true this PDU will represent a ICMP ttl
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* exceeded, otherwise it will represent a fragment reassembly
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* time exceeded.
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*/
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void set_time_exceeded(bool ttl_exceeded = true);
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/** \brief Sets parameter problem flag for this PDU.
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*
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* \param set_pointer Indicates wether a pointer to the bad octet
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* is provided.
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* \param bad_octet Identifies the octet in which the error was
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* detected. If set_pointer == false, it is ignored.
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*/
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void set_param_problem(bool set_pointer = false, uint8_t bad_octet = 0);
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/** \brief Sets source quench flag for this PDU.
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*/
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void set_source_quench();
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/** \brief Sets redirect flag for this PDU.
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*
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* \param icode The code to be set.
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* \param address Address of the gateway to which traffic should
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* be sent.
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*/
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void set_redirect(uint8_t icode, uint32_t address);
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/** \brief Returns the ICMP type flag.
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*/
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Flags type() const { return (Flags)_icmp.type; }
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/** \brief Returns the ICMP code flag.
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*/
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uint8_t code() const { return _icmp.code; }
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/** \brief Returns the header size.
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*
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* This metod overrides PDU::header_size. This size includes the
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* payload and options size. \sa PDU::header_size
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*/
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uint32_t header_size() const;
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private:
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static uint16_t global_id, global_seq;
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struct icmphdr {
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uint8_t type;
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uint8_t code;
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uint16_t check;
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union {
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struct {
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uint16_t id;
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uint16_t sequence;
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} echo;
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uint32_t gateway;
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struct {
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uint16_t __unused;
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uint16_t mtu;
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} frag;
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} un;
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} __attribute__((packed));
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/** \brief Serialices this ICMP PDU.
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* \param buffer The buffer in which the PDU will be serialized.
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* \param total_sz The size available in the buffer.
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* \param parent The PDU that's one level below this one on the stack.
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*/
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void write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU *parent);
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icmphdr _icmp;
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};
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};
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#endif
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@@ -182,7 +182,6 @@ namespace Tins {
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*/
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void add_option(Options tcp_option, uint8_t length = 0, uint8_t *data = 0);
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/* Virtual methods */
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/** \brief Returns the header size.
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*
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* This metod overrides PDU::header_size. This size includes the
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@@ -76,7 +76,6 @@ namespace Tins {
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*/
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void payload(uint8_t *new_payload, uint32_t new_payload_size);
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/* Virtual methods */
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/** \brief Returns the header size.
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*
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* This metod overrides PDU::header_size. This size includes the
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